Tutorial In Introductory Physics: charge

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The discussion revolves around understanding the forces in different cases of a physics assignment related to charge interactions. Participants express confusion about the relationships between Case C and Case D, with one user believing they should be equal while another argues Case D exerts a greater force on the +q charge. The reasoning provided indicates that Case A is less than Case B, and Case C is perceived as double Case A, while Case D combines both Cases A and B. This leads to the conclusion that Case D should exert a larger force than Case C. Clarification and justification for these relationships are sought to solidify understanding.
Salamandersam
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link to problem: http://www.csu.edu/chemistryandphysics/msabella/ccli/UpdatedLabs/physics2-calc/HW%20packet.pdf

I don't under part two of question two on the assignment with the Case C and D. my gut instinct tells me that they are equal, but I do not have justifacation and when I look back to part one of 2 I think that Case D would have a greater force on the +q charge.

I know that Case A< Case B, and case C looks like 2(case A) and case D looks like (case A + Case B) so 2(case A) should be less than (case A +case B) meaning that Case D should be larger than C?
 
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Hi Salamandersam! Welcome to PF! :wink:
Salamandersam said:
… I do not have justifacation …

I know that Case A< Case B …

Yes, so let's start with that …

tell us your justification for Case A< Case B :smile:
 

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